Europa Clipper’s actual thermal imager (called the Europa Thermal Emission Imaging System, or E-THEMIS) camera that's going to Europa is at left, bolted inside a skeleton frame used by engineers to handle the instrument without touching it. Shiny copper (center) shows part of the heavy copper-tungsten vault that will shield vulnerable electronics from Jupiter's powerful radiation. Below the vault is the instrument's gray sunshade, through which thermal radiation enters the instrument. Except during tests, the sunshade's aperture is kept covered by foil to protect the optical elements.